Fig. 3. A 78-year-old male with chronic total occlusion in the proximal left anterior coronary artery (LAD) and procedure by retrograde wire crossing technique.

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Fig. 3. A 78-year-old male with chronic total occlusion in the proximal left anterior coronary artery (LAD) and procedure by retrograde wire crossing technique. A curved multiplanar reconstruction image (A) and volume rendering image (B) show occlusion of the proximal LAD (solid arrows). LAD os has blunt stump and reverse tapered opacification is seen in the distal segment of occlusion (dashed arrow). Right coronary angiography showed collaterals from the right coronary artery (RCA) to the LAD via septal channels (not shown). The retrograde (solid arrow indicates the RCA os) guidewire through septal branch is located in the LAD, just distal to occluded segment (C). During drilling occluded segment, left coronary angiography shows short occluded LAD segment (solid arrow in D). Finally, the guidewire passed through the occluded segment (not shown). Fig. 3. A 78-year-old male with chronic total occlusion in the proximal left anterior coronary artery (LAD) and procedure by retrograde wire crossing technique. A curved multiplanar reconstruction image (A) and volume rendering image (B) show occlusion of the proximal LAD (solid arrows). LAD os has blunt stump and reverse tapered opacification is seen in the distal . . . J Korean Soc Radiol. 2015 Mar;72(3):147-155. http://dx.doi.org/10.3348/jksr.2015.72.3.147